This is a known issue and was reproduced by one of the moderators in this thread:
For the time being, you can work around it in a couple of ways:
- Use the Plex desktop app for Windows or Mac, if you have one of those platforms; or
- De-select “Remember selected tab” in the web UI at Settings → Web Client → General:
The second option will cause the view to default to Recommend when Live TV & DVR is selected from the left panel.
